Swimmy — AI swim training
A platform for logging sessions, tracking race times, and preparing workouts with AI, with tools for swimmers and coaches.
Technical Overview
Swimmy brings swim training planning and tracking together. Swimmers can log sessions, import watch activities, and review personal times and meet results in one history. It generates AI workouts based on swimming level, available time, energy, and session goals. For coaches, it adds swimmer and program management, pool timing, and tournament organization.
Problem Statement
Planning the next session means looking at previous training and changes in performance. That information is often scattered across notes, meet spreadsheets, and watch files. Swimmy’s challenge is to bring it into a workflow that serves both independent swimmers and coaches working with multiple athletes.
Architecture
Built with Next.js 16, React 19, and TypeScript, with separate areas for the public website and application. Convex centralizes training data and coach–swimmer relationships; WorkOS AuthKit handles authentication and Polar manages subscriptions. Workout generation integrates Google Gemini through the AI SDK. The public site is available in Spanish, English, and Portuguese, and the application is installable as a PWA.
Key Features
- Session history and time tracking by event
- AI workouts based on level, time, energy, training zone, and stroke
- FIT and TCX activity imports saved as completed sessions
- Meet records and CSV result imports
- Swimmer management, programs, timing, and tournaments for coaches
- Free, AI, and Coach plans with different generation and analysis access
- Public website in three languages and an installable PWA
Challenges
- Combining manual sessions, watch activities, and meet results without duplicating history
- Turning swimmer preferences into structured sessions with AI
- Supporting swimmer and coach workflows within one product
- Keeping plan permissions consistent with subscription status
Outcomes
Published at swimmy.site, combining training records, AI planning, and coaching tools. The product includes activity imports, meet tracking, and subscriptions for different uses.